1312072 has 16 divisors (see below), whose sum is σ = 2472300. Its totient is φ = 652800.

The previous prime is 1312027. The next prime is 1312079. The reversal of 1312072 is 2702131.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 910116 + 401956 = 954^2 + 634^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312079) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3004 + ... + 3412.

2^1312072 is an apocalyptic number.

It is an amenable number.

1312072 is a deficient number, since it is larger than the sum of its proper divisors (1160228).

1312072 is a wasteful number, since it uses less digits than its factorization.

1312072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 816 (or 812 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 1312072 is about 1145.4571139942. The cubic root of 1312072 is about 109.4760760339.

The spelling of 1312072 in words is "one million, three hundred twelve thousand, seventy-two".